CN212032747U

CN212032747U - High-performance cross-linked polyethylene insulated variable frequency cable

Info

Publication number: CN212032747U
Application number: CN202020390640.9U
Authority: CN
Inventors: 胡建斌; 蒋浩; 陈勇军
Original assignee: Wuxi Sunan Cable Co ltd
Current assignee: Wuxi Sunan Cable Co ltd
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2020-11-27
Anticipated expiration: 2030-03-25

Abstract

The utility model relates to a high performance crosslinked polyethylene insulation variable frequency cable, it includes the conductor outside is equipped with the internal insulation layer the internal insulation outside is equipped with the insulation shield layer the insulation shield outside is equipped with the external insulation layer the external insulation outside is equipped with polyurethane foam layer outside is equipped with the copper wire shielding layer, and they constitute electrically conductive body, the tangent setting of a plurality of electrically conductive body be equipped with the obturator between the outside clearance of electrically conductive body. The utility model discloses the cable roundness is good, and insulating nature and electromagnetic shielding performance are good, long service life.

Description

High-performance cross-linked polyethylene insulated variable frequency cable

Technical Field

The utility model relates to a cable, concretely relates to insulating variable frequency cable.

Background

With the rapid development of national economy, the using amount and the application range of the cable used as the main artery of the national economy are larger and larger. In recent years, the demand of industries such as power plants, transformer substations, smelting, petrochemical industry and the like on cables is extremely large. In modern industrial fields, electrical control uses a large number of weak current controls. And because a power supply with variable frequency is provided, a variable electric field can generate a variable magnetic field in the transmission process, so that the alternating electromagnetic field can affect peripheral weak current equipment, and the environmental pollution is called as the environmental pollution of electromagnetic waves. This requires a medium voltage frequency conversion cable with good electromagnetic shielding properties. In addition, the existing insulated variable frequency cable has the following defects: firstly, the roundness of the multi-core cable is difficult to guarantee; secondly, the cable is not flexible, and the transportation, installation and laying are inconvenient.

Disclosure of Invention

The purpose of the invention is as follows: the utility model aims at overcoming the not enough among the prior art, provide a stranding circularity good, insulating nature and electromagnetic shielding performance are good, long service life's high performance crosslinked polyethylene insulation variable frequency cable.

The technical scheme is as follows: in order to solve the technical problem, the utility model provides a high-performance crosslinked polyethylene insulated variable frequency cable, which comprises a conductor, an inner insulating layer is arranged outside the conductor, an insulating shielding layer is arranged outside the inner insulating layer, an outer insulating layer is arranged outside the insulating shielding layer, a polyurethane foam layer is arranged outside the outer insulating layer, a copper wire shielding layer is arranged outside the polyurethane foam layer, the polyurethane foam layer and the copper wire shielding layer form a conductive body, a plurality of conductive bodies are arranged in a tangent mode, a filling body is arranged between gaps outside the conductive bodies, a central wire core body is arranged in the filling body, the central wire core body is in contact with the copper wire shielding layer, the filling body comprises a filling body, two central wire core holes are arranged inside the filling body, the conductive body and the filling body form a circular cable core, a ceramic silicon rubber tape layer is arranged outside the cable core, and a braided layer is arranged outside the ceramic silicon rubber belt layer, and an outer sheath is arranged outside the braided layer.

The inner insulating layer and the outer insulating layer are both made of cross-linked polyethylene, the thickness of the inner insulating layer is 1-3mm, and the thickness of the outer insulating layer is 2-5 mm.

An opening is arranged on the central core hole and is positioned on the inner wall of the filling body.

The central line core body is a bare copper wire conductor.

The braided layer is formed by vertically braiding spandex fiber filaments and thin copper wires according to 2-layer 1.

Has the advantages that: compared with the prior art, the utility model, it is showing the advantage and is: the utility model has the advantages of reasonable overall structure, adopt interior, outer two-layer insulation, make insulating properties good, the central line core body contacts with the copper wire shielding layer, further improve insulating properties, good electromagnetic shielding performance has simultaneously, can effectively improve the cumulative multiple who restraines operating voltage, prevent electromagnetic environmental pollution, the central line core body is established at packing the body inboardly, the inner wall and the conductive body outer wall of packing the body are near setting up, the circularity, the holding power, intensity is better, adopt by spandex fiber silk and thin copper wire according to 2 pile 1 weaving braid that form perpendicularly, flexibility is good and tensile strength is high, this product passes through each layer cooperation, operate steadily reliably, whole long service life, accord with the in-service use requirement.

Drawings

Fig. 1 is a schematic cross-sectional structure of the present invention;

fig. 2 is a schematic structural diagram of the filling body of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

As shown in fig. 1 and fig. 2, the high performance cross-linked polyethylene insulated variable frequency cable of the present invention comprises a conductor 1, an inner insulating layer 2 is disposed outside the conductor 1, an insulating shielding layer 3 is disposed outside the inner insulating layer 2, an outer insulating layer 4 is disposed outside the insulating shielding layer 3, the inner insulating layer 2 and the outer insulating layer 4 are both made of cross-linked polyethylene, the thickness of the inner insulating layer 2 is 1-3mm, the thickness of the outer insulating layer 4 is 2-5mm, a polyurethane foam layer 5 is disposed outside the outer insulating layer 4, a copper wire shielding layer 6 is disposed outside the polyurethane foam layer 5, which form conductive bodies, a plurality of conductive bodies are arranged in a tangent manner, a filler 7 is disposed between gaps outside the conductive bodies, a neutral conductor core body 8 is disposed in the filler 7, the cable comprises a middle wire core body 8, a middle wire core body 8 and a copper wire shielding layer 6, wherein the middle wire core body 8 is a bare copper wire conductor, the middle wire core body 8 is in contact with the copper wire shielding layer 6, the filler 7 comprises a filler body 9, two middle wire core holes 10 are formed in the inner side of the filler body 9, an opening 14 is formed in each middle wire core hole 10, the opening 14 is formed in the inner wall of the filler body 9, the conductive body and the filler body 7 form a circular cable core, a silicon rubber ceramic tape layer 11 is arranged outside the cable core, a woven layer 12 is arranged outside the silicon rubber ceramic tape layer 11, the woven layer 12 is formed by vertically weaving spandex fibers and thin copper wires according to 2-layer 1, and an outer sheath 13 is arranged outside. The utility model has the advantages of reasonable overall structure, adopt interior, outer two-layer insulation, make insulating properties good, the central line core body contacts with the copper wire shielding layer, further improve insulating properties, good electromagnetic shielding performance has simultaneously, can effectively improve the cumulative multiple who restraines operating voltage, prevent electromagnetic environmental pollution, the central line core body is established at packing the body inboardly, the inner wall and the conductive body outer wall of packing the body are near setting up, the circularity, the holding power, intensity is better, adopt by spandex fiber silk and thin copper wire according to 2 pile 1 weaving braid that form perpendicularly, flexibility is good and tensile strength is high, this product passes through each layer cooperation, operate steadily reliably, whole long service life, accord with the in-service use requirement.

The utility model provides a thinking and method, the method and the way of specifically realizing this technical scheme are many, above only the utility model discloses a preferred embodiment should point out, to the ordinary technical personnel in this technical field, not deviating from the utility model discloses under the prerequisite of principle, can also make a plurality of improvements and moist decorations, these improvements should also be regarded as the utility model discloses a protection range, each component that does not make clear and definite in this embodiment all can be realized with prior art.

Claims

1. The utility model provides a high performance crosslinked polyethylene insulated variable frequency cable which characterized in that: the cable comprises a conductor (1), an inner insulating layer (2) is arranged outside the conductor (1), an insulating shielding layer (3) is arranged outside the inner insulating layer (2), an outer insulating layer (4) is arranged outside the insulating shielding layer (3), a polyurethane foam layer (5) is arranged outside the outer insulating layer (4), copper wire shielding layers (6) are arranged outside the polyurethane foam layer (5) and form conductive bodies, a plurality of conductive bodies are arranged in a tangent mode, filling bodies (7) are arranged between gaps outside the conductive bodies, a central line core body (8) is arranged in each filling body (7), the central line core body (8) is arranged in contact with the copper wire shielding layers (6), each filling body (7) comprises a filling body (9), two central line core holes (10) are arranged on the inner side of each filling body (9), and the conductive bodies and the filling bodies (7) form a circular cable core, a silicon rubber ceramic tape layer (11) is arranged outside the cable core, a braided layer (12) is arranged outside the silicon rubber ceramic tape layer (11), and an outer sheath (13) is arranged outside the braided layer (12).

2. The high-performance cross-linked polyethylene insulated variable frequency cable according to claim 1, wherein: the inner insulating layer (2) and the outer insulating layer (4) are both made of cross-linked polyethylene, the thickness of the inner insulating layer (2) is 1-3mm, and the thickness of the outer insulating layer (4) is 2-5 mm.

3. The high-performance cross-linked polyethylene insulated variable frequency cable according to claim 1, wherein: an opening (14) is arranged on the central line core hole (10), and the opening (14) is arranged on the inner wall of the filling body (9).

4. The high-performance cross-linked polyethylene insulated variable frequency cable according to claim 1, wherein: the central line core body (8) is a bare copper wire conductor.

5. The high-performance cross-linked polyethylene insulated variable frequency cable according to claim 1, wherein: the braided layer (12) is formed by vertically braiding spandex fiber filaments and thin copper wires according to 2-layer 1.